Portable electric lamp



Oct. 16,1923.

.1. c. ARMO UF Q PORTABLE 111112011110 LAMP Filed may 31 .HGB

Fi GT1 ATTOKN I Patented ca, 16,1923, 7

curse stares JOHN CLAUDE naivicun, or MONTREAL, QUEBEC, CANADA.

P ETABLE ELECTRIC LAMP.

Application filed May 31,

vTo all whom it may mm:

Be it known that I, Join: CLAUDE ARMOUR, a subject of the King of GreatBritain, and residing at the city of Mentreal, in the Province ofQuebec, in the Dominion of Canada, have invented a new and usefulPortable Electric Lamp, of which the following is the specification.

The invention relates to portable electric lamps as described in thepresent specification and illustrated in the accompanying drawingsthatform part of the same.

The invention consists essentially of the novel features of constructionpointed out broaoly and Specifically 'inthe claim'for novelty followinga description in detail of the preferred form of the invention.

The objects of the invention are to furnish to the public-in the onearticle a handsome desk or table lamp and a reliable clamping lampadapted to grip securely table, shelf or other board or frame; to reducethe cost of construction; to insure a permanent and unobstructed passagefor the electric cord; to eliminatethe-pivoted arms common to clampinglamps; and generally to provide a durable and efficient lamp at acomparatively low cost. y I

In the drawings, Figure 1 is an elevation of the lamp. 7 r V Figure 2 isa vertical sectional view showin the clamping plate closed on th'ebase.*igure 3 is a vertical sectional view showing the clampingv plate andbase gripping a table. v V

Figure 4 is a detail of the Cap of the clamping plate stem. I

Figure 5 is a detail of the clamping plate stem. I

Figure 6 is a detail of the'fillet ring. Figure 7 is a detail of thestem thimble. Figure 8 is a detail of the clamping plate.

Like numerals of reference indicate cor! responding parts in the variousfigures.

Referring to the drawings, the p'erma nent base 1 is preferably formed.with the curled out bottom 2 and dished centre 3 having the post hole 4.i r

The lamp post 5 is tubular and externally threaded at the upper end 7,said lower end projecting through the hole 4 and securely fastened bythe nuts 8 and 9. w

Intermediate of the height of the post 5 the pin 10 projects fromthe-wall at each side and holds the washer 11 down on the spiral ring12, which encircles'said post.

1922-. Serial No. 5 4,973.

The upper side of the basal is perfectly flat surrounding the dishedcentre 3 and is covered by the felt 13.

The clamping plate 14 is also formed with a flat felt covered bottom14?, corresponding to the felt top 13 of the base which '00- operateswith the clamping plate 14 in bolding the lamp to a table, frame orshelf.

The clamping plate stem 15 is externally threaded at the upper end 16and internally threaded at the lower end 17 and screws on to the thimble18, which is flanged under the clamping plate 14 and projectstherethrough forming a stop for the spiral spring 12, the joint of thestem 15 and plate 14 being hidden by the fillet ring 19.

The cap 20 is screwed on to the upper end of the stem 15. v v I V Thelamp bracket 21,-is suitably secured to the top of the post 5 and thelamp socket 22 is pivotally'cattached thereto, but this part has nothingto do with the invention other than being part of aregular lampconstruction. v

In clamping the'lamp to a table or shelf the stem 15 is grasped by thehand of the person and pulled upwardly thereby lifting V the plate 14away from the base 1 and at the same time compressing the spring 12 sothat when the person lets go the plate 14 is sprung downwardly on thetable between the base and clamping plate and coincidentally the base ispulled upwardly by the spring, Which insures a fast hold on theobject-to which the lamp is attached.

What I claim is A portable electric lamp comprising a base and a centralpost adapted together to form apermanent cord receptacle and passageleading from a cord inlet in the base wall to a cord outlet tothe lampat the top of said post, a'spring stop intermediate of the height ofsaidpost, aspringaround the outer surface of said post under said stop,a

base and encircling said post, and a hollow stem projecting upwardlyfrom and rigidly secured to said plate and enclosing said spring andcompressing the same against said stopon the operationof said stem.

Signed at Montreal,Canada, this 22 day of May, 1922. I

- JOHN CLAUDE ARMQUR clamping plate normally spring-held to said 7

